Regarding leaks:
I experience everything from 2 months in advance to 2 weeks after the first release date, haha. The Maiden album probably won't leak until days before release, due to severe crack down on it. I wouldn't expect to see it anywhere before the Thursday or Friday before release. I have no problem with this being that Maiden are one of the few (if not only) bands I have a strict "no leak" policy for.